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3 years ago

Explain how egestion differs from excretion (3 marks)

1 answer:

4 0

Egestion is the discharge or expulsion of undigested material (food) from a cell while excretion is process of eliminating or expelling waste matter (that had already been digested)

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Some argue that publishing personal dna sequencing results is unethical because:

horrorfan [7]

The answer is ‘Life insurance could be denied’. Publishing DNA results could make public genetic predisposition to diseases such as Huntington's disease, cystic fibrosis, and disorders such as Alzheimer's that are caused by environmental factors influence on the respective genetic mutations. This would cause the life and health insurers to evade such individuals since they are considered a liability. This would deny the individuals the right to health insurance.

7 0

3 years ago

Read 2 more answers

What two elements have the same number of energy level (shells)?

melomori [17]

Answer:

Elements that are found in the same horizontal row (belong to the same period) in the periodic table, e.g. Fluorine and Neon both have the same energy level of 2.

Note: The question does not specify any two elements.

Explanation:

The modern periodic table is organized into eight vertical columns known as groups and seven horizontal rows known as periods. The atomic number ( number of protons in the nucleus) of elements increases when moving across the periodic table from left to right. The horizontal rows or periods represents an energy levels or the number of electron shells in an element. Energy levels (also called electron shells) are fixed distances from the nucleus of an atom where electrons may be found. Elements belonging to the same period have the same number of energy level or shells. For example, the elements belonging to Period 2 include lithium, beryllium, boron, carbon, nitrogen, oxygen, fluorine and neon. These all have the same number of energy level of 2.

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3 years ago

A multigravid client admitted to the labor area is scheduled for a cesarean birth under spinal anesthesia. Which client statemen

Gekata [30.6K]

Answer:The anesthetic may cause a severe headache, which is treatable."

Explanation:

Spinal anesthesia is a type of anesthesia which is administered locally using a fine needle between L3 and L4 space or L4 and L5 space in order to avoid injury to the spinal cord. This procedure is usually carried out by a trained health personnel such as:

- a nurse anesthetists and

- anesthesiologists

Spinal anaesthesia can be used in different surgical procedures such as Caesarea sections and to manage pain during vaginal delivery in MULTIGRAVID CLIENTS, which are those clients who has been pregnant more than once.

Caesarean section is usually done while the patient is awake with the use of spinal anaesthesia. Therefore it's important to explain any possible side effects from the drug to the patient which includes a severe type of headache called post-spinal headache and it's treatable.

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3 years ago

In garden peas, the yellow seed trait is dominant over green seeds. Also, the round seed trait is dominant over the wrinkled-see

Darina [25.2K]

Answer:

405 individuals will be yellow and round seeded.

Explanation:

Available data:

the yellow seed trait is dominant over green seeds
round seed trait is dominant over the wrinkled-seed trait
These genes are on separate chromosomes

Let´s name the seed color genes Y, and the seed shape gene R

Y is the dominant allele for seed color expressing yellow

y is the recessive allele for seed color expressing green

R is the dominant allele for seed shape expressing round

r is the recessive allele for seed shape expressing wrinkled

Cross: between two plants that are heterozygous for both traits

Parental) Yy Rr x Yy Rr

Gametes) YR yR Yr yr YR yR Yr yr

Punnet Square) YR yR Yr yr

YR YYRR YyRR YYRr YyRr

yR YyRR yyRR YyRr yyRr

Yr YYRr YyRr YYrr Yyrr

yr YyRr yyRr Yyrr yyrr

F1) 720 individuals

9/16 yellow and round seeded individuals, Y-R-

3/16 green and round seeded individuals, yyR-

3/16 yellow and wrinkle seeded individuals, Y-rr

1/16 green and wrinkle seeded individuals, yyrr

Note: the "-" symbol in the phenotypes means that there it could be either a dominant or recessive allele.

If 720 is the total number of individuals in the F1, then:

16 possible genotypes ---------- 100% of the progeny -------- 720 individuals

9 yellow and rounded----------- 56.25% ----------------------------405 individuals

3 green and rounded-------------18.75%------------------------------135 individuals

3 yellow and wrinkled-------------18.75%------------------------------135 individuals

1 green and wrinkled--------------6.25%-------------------------------45 individuals

7 0

3 years ago

3. One grape is placed in tap

DerKrebs [107]

Answer:

the dependant is the water the independant is the mass i think

Explanation:

3 0

3 years ago