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devlian [24]
3 years ago
8

Some geologists hypothesize that the mass extinction of dinosaurs was caused by a large meteorite impact. These geologists think

the meteorite impact significantly changed Earth's climate. How could a meteorite impact do this?
Biology
2 answers:
Maksim231197 [3]3 years ago
8 0

Infact the meteor only had a 13% chance to hit the earth and make ash and soot fly into the air

ANTONII [103]3 years ago
3 0
The meteorite was probably 1<span>0 to 15 km (6.2 to 9.3 mi) wide</span> and affected the entire planet through a proces called "impact winter". As the name suggests, an impact winter is a period of low temperature produced by a huge cloud of ash and dust that blocks sunlight. Since sunlight is essential for plants to survive, if the sun rays are blocked by this cloud, all animals that depend on those plants (including dinosaurs) will die. The meteorite could have created such a cloud upon hitting the earth.  
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The plasma proteins involved in fighting infections are
NeTakaya
Plasma proteins account at least 8% of the plasma, they contribute to osmotic pressure and maintain water balance in blood and tissues, other functions includes transport and enzymatic activities. Plasma proteins include albumin, fibrinogen and globulin (alpha, beta and gamma). Globulin proteins may be used to fight infections such that gamma globulin antibodies are released by the plasma during immune response.
5 0
3 years ago
Select the correct locations in the images.
Arlecino [84]

Homozygous individuals' genotype is composed of the same type of alleles. In this example, the offspring with homozygous alleles for the smooth pod trait are SS.

<h3>What is homozygous genotype?</h3>

The term homozygosis is used to refer to the genotype of individuals that carry the same type of alleles.

Let us remember that alleles are the alternative forms in which a gene can be expressed.

To understand the concept, let us think about a diallelic gene, which is a gene that has two types of alleles.

  • Dominant allele → let us represent it with an A
  • Recessive allele → let us represent it with an a

Homozygous individuals will have two alleles of the same type

  • AA → homozygous dominant because it carries the dominant alleles
  • aa → homozygous recessive because it carries the recessive alleles

Heterozygous individuals are those that carry two types of alleles, dominant and recessive → Aa

In the exposed example,

  • the dominant allele → S → codes for smooth
  • the recessive allele → s → codes for constricted

Cross 1: Two homozygous individuals are crossed

Parentals)         SS                    x               ss              

Phenotype) smooth pods                   constricted pods

F1) The first generation is composed only of heterozygous inviduals → Ss

The whole generation has smooth pods because they carry the dominant allele which expresses the dominant phenotype.

Cross 2:  Two heterozygous individuals are crossed

Parentals)       Ss x Ss

Phenotype) smooth pods

F2) The second generation is composed of

  • 1/4 = 25% homozygous dominant indiviudals →<u> SS → smooth</u>
  • 1/2 = 50% heterozygous inviduals → Ss → smooth
  • 1/4 = 25% homozygous recessive indiviudals → ss → constricted

The offspring with homozygous alleles for the smooth pod trait are SS.

You can learn more about homozygous genotype at

brainly.com/question/1084870

brainly.com/question/14804681

brainly.com/question/22405088

#SPJ1  

4 0
2 years ago
Which term best describes a protein that speeds up chemical reactions in living things
Helen [10]
I believe this is enzymes
8 0
3 years ago
What did the structure of DNA’s double helix suggest about DNA’s properties? Select all that apply.
givi [52]

Completed part of the questionErrors in copying can result in changes in the DNA sequence that could be inherited by future generation.

Answer:

DNA stores genetic information in the sequence of its bases

DNA can be replicated by making complementary copies of each strand

Errors in copying can result in changes in the DNA sequence that could be inherited by future generation.

Explanation:

<u>the  fact that DNA is located in the Nucleus is not related to double strands.</u>

<u>the DNA csn change is not relevant ,</u>

<u> therefore the above 3 options are the correct answers.</u>

7 0
3 years ago
Describe Sex Cell?
geniusboy [140]

Answer:

Gametes are an organism's reproductive cells. They are also referred to as sex cells. Female gametes are called ova or egg cells, and male gametes are called sperm. Gametes are haploid cells, and each cell carries only one copy of each chromosome. ... In contrast, each egg cell, or ovum, is relatively large and non-motile.

Explanation:

5 0
2 years ago
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