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3 years ago

Explain how a crayfish is designed to be a bottom feeder.

1 answer:

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Bottom feeders are aquatic animals that feed on the bottom of a body of a water. Crayfish is the bottom feeder. It is not active swimmer, it feed on stationary or slow pray, so it does not have such a streamlined body necessary to reduce drag during swimming. Its mouth is located on the underside of their heads and that way mouth is closer to the bottom where their food is.

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Cellular respiration is balanced by photosynthesis; the two processes work

Finger [1]

Answer:

A is the answer

Explanation:

Carbon dioxide and water are the reactants of both processes

4 0

3 years ago

A biologist at World University used Procedure IV to conduct an additional study and found the sequence following below. Using y

Nady [450]

Answer:

Valine-Leucine-Proline-Lysine-Histidine

Explanation:

The central dogma of biology is the process by which DNA is used to synthesize RNA and subsequently amino acid sequence (PROTEIN). The processes of transcription and translation is used in gene expression. Transcription is the process whereby the information encoded in a DNA molecule is used to synthesize a mRNA molecule. Transcription is catalyzed by RNA polymerase enzyme, which uses complementary base pairing rule i.e Adenine(A)-Thymine(T), Guanine(G)-Cytosine(C) pairing.

N.B: Thymine is replaced by Uracil in the mRNA

For the above DNA sequence: CAC GAC GGA TTC GTA, the mRNA sequence will be: GUG CUG CCU AAG CAU

Translation is the second process of gene expression which involves the synthesis of an amino acid sequence from an mRNA molecule. The mRNA is read in a group of three nucleotides called CODON. Each codon specifies an amino acid (see attached image for genetic code)

Based on the attached genetic code, an mRNA sequence: GUG CUG CCU AAG CAU will encode an amino acid sequence: Valine(Val) - Leucine (Leu) -Proline (Pro) -Lysine (Lys) - Histidine (His).

GUG specifies Valine amino acid

CUG specifies Leucine amino acid

CCU specifies Proline amino acid

AAG specifies Lysine amino acid

CAU specifies Histidine amino acid

5 0

3 years ago

Insulin is a protein hormone. How would insulin bind to its target cells?

Deffense [45]

The answer is A. The insulin, like many hormones binds to cells through receptors found on the cell membrane

3 0

3 years ago

Read 2 more answers

Which example describe biotic and abiotic factors interacting with the environment? A a valley filling up with rain water b sunl

Mamont248 [21]

Answer:

Explanation:

Remember, a biotic factors are those that are living (having life in them), while the abiotic factors are not living organisms.

Oxygen is in the category of biotic and it interacts with the atmosphere (space) which is abiotic.

8 0

4 years ago

Read 2 more answers

During metamorphosis, a tadpole's tail is reduced in size by the process of ______. A. regeneration B. apoptosis C. oxidative ph

jolli1 [7]

The process of apoptosis, I believe, is when the tadpole's tail is reduced in size during metamorphosis.

In most animal phyla, metamorphosis actually takes place in conjunction with morphological, ecological, and physiological changes.

Marine invertebrates' larva behaves as a drifting tiny creature in the ocean, expanding its habitat distribution to find the best location for its survival.

When muscle cells undergo apoptosis, which is the final stage of their metamorphosis, they are split into membrane-bound muscle fragments and consumed by macrophages.

As a tadpole becomes a frog, apoptosis occurs. The cells in its tail are induced and it will be lost.

Image: Metamorphosis of a frog

Learn which protein is responsible for initiating apoptosis in the cytosol of the target cell: brainly.com/question/28275150

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7 0

1 year ago